Probe microscopy methods and applications in imaging of biological materials

Area of Science:

• Biophysics
• Materials Science
• Cell Biology

Background:

• Atomic force microscopy (AFM) is vital for studying cellular interactions at the biomolecular level.
• Biological sample analysis often occurs in aqueous environments on rough surfaces, complicating AFM imaging and potentially damaging probes.
• Probe shape, size, and surface chemistry significantly impact data quality and the types of biological information obtainable.

Purpose of the Study:

• To review the importance of AFM probe selection and modification for biomaterial analysis.
• To discuss recent advancements in non-standard AFM tips for life sciences research.
• To explore future applications of AFM tip functionalization in cell and tissue interaction studies.

Main Methods:

• Review of existing literature on AFM probe modification techniques.
• Analysis of specialized AFM tip morphologies (e.g., specialized shapes, surface coatings).
• Discussion of functionalization strategies involving biomolecules (proteins, nucleic acids) and cells.

Main Results:

• Probe modification techniques are essential for overcoming limitations in biological AFM measurements.
• Specialized probes improve imaging quality and enable new types of data acquisition from complex biological samples.
• Functionalized probes allow for targeted investigations of specific biomolecular interactions.

Conclusions:

• Strategic AFM probe choice and modification are critical for accurate biomaterial analysis.
• Non-standard and functionalized AFM tips significantly advance life sciences research capabilities.
• Future tip functionalization holds great promise for deeper understanding of fundamental cell and tissue interactions.